• Matematika
  • TRIGONOMETRI Kelas 11 SMA
  • Persamaan Trigonometri
  • Persamaan Trigonometri

Video solusi : If cotan x+cos x= a and cotan x-cos x=b, show that akar(ab)=cos x.cotan x where x is acute and hence prove that a^2-b^2=4 akar(ab).

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